When you first get on this thing, likely in a parking lot, it's going to feel weird. Bouncing up and down on the suspension will feel stiff, and maybe even a little unpleasant, but then you'll ride it over a curb and you'll start to see the advantages. Hitting the curb head-on, even without lifting on the bars at all, is a remarkably smooth experience, much nicer than with a traditional telescopic fork.
Amazingly one of the places that you're going to notice the biggest improvements is in technical climbing. The front wheel seems to just hover over obstacles. Sections that used to be very physical will become smooth and easy because you don't need to throw the front end around to get over rocks and roots. Just keep a smooth cadence going and you'll float over objects that would have thrown you on a telescopic fork.
Once you start heading downhill you're likely going to have to adapt your style a little bit to get the most out of the fork. You'll want to shift your weight forward of where you normally descend and put some more weight on the bars. If you do this you'll find that your front end grips like it never has before. Seriously the difference in grip is crazy for two reasons. One this fork does a much better job of keeping steady pressure on the front tire and two you don't get any brake dive so your head angle stays the same under braking (and during big hits as well). These two things mean that your front end has more consistent forces on it and gives a more reliable level of grip suitable railing high-speed turns. Now part of the way it accomplishes this is by staying higher in the travel which means that the hits are going to feel a bit harsher and the overall performance is less playful, so this definitely isn't outright better than telescopic forks.
The way I like to look at it is that the Trust Message was built to improve over telescopic forks in terms of stability, small bump compliance, and grip. It is wildly successful in these areas but it does sacrifice a little bit in comfort and playfulness. So depending on your riding style and the bike you're pairing it with it could either be a massive improvement or a moderate disappointment.
Since I'm sure you're all wondering about the weight, it comes in between a Fox 34 and 36.
Bikes I would recommend for this fork:
Pivot Trail 429